How to delete a line from UIAxes using plotedit in the menu bar with app designer.

Hi,

I want to edit a line from UIAxes using plotedit in the menu bar with app designer. I used callback "Plot_editMenuSelected" But it is not working.

function Plot_editMenuSelected(app, event)

plotedit(app.UIAxes,'on')

end

Can someone please tell me solution?

Thanks

[Ashutosh Thakur]

Hi @mg,

It is very difficult to know what is the core issue without access to the complete codebase. Can you try to upload MLAPP as well?

Thanks

Answer 1

[Avni Agrawal]

Hi @mg,

I understand that you are trying to enable plot editing for a UIAxes in App Designer using the `plotedit` function. However, `plotedit` is not directly applicable to `UIAxes` in App Designer. Instead, you may need to use other approaches to allow editing or modifying plots in `UIAxes`.

Here is a possible solution using a context menu to enable editing of plot properties:

1. Create a context menu for the `UIAxes`.

2. Add menu items to the context menu for editing options.

3. Define callbacks for these menu items to allow editing of plot properties.

Step 1: Create a Context Menu

In the `startupFcn` of your app, create a context menu and assign it to the `UIAxes`.

function startupFcn(app)

% Create context menu

c = uicontextmenu(app.UIFigure);

% Create menu items

uimenu(c, 'Text', 'Edit Line', 'MenuSelectedFcn', @(src,event)editLine(app));

% Assign context menu to UIAxes

app.UIAxes.UIContextMenu = c;

end

Step 2: Define the Callback Function

Define the `editLine` function to allow editing of the line properties.

function editLine(app)

% Get the current line object

lineHandle = findobj(app.UIAxes, 'Type', 'Line');

if isempty(lineHandle)

uialert(app.UIFigure, 'No line found in the axes.', 'Error');

return;

end

% Example: Change line color

newColor = uisetcolor;

if length(newColor) == 3

lineHandle.Color = newColor;

end

end

I hope this helps!

[mg]

Hi Avni ,

I tried as your method. It works well. but I modified the callback function and added a function called plotedit, but I could not edit the lines of the graphs on UIAxes. Perhaps plotedit does not work with UIAxes. Thank you so much.

function Plot_editCheckBoxValueChanged(app, event)
                       
            lineHandle = findobj(app.UIAxes)
            plotedit(lineHandle,'on')
            
            % Get the current line object
            
%             lineHandle = findobj(app.UIAxes, 'Type', 'Line');
%     
%             if isempty(lineHandle)
%                uialert(app.GUI_PlotUIFigure, 'No line found in the axes.', 'Error');
%                return;
%             end
% 
%             % Example: Change line color
%             newColor = uisetcolor;
%             if length(newColor) == 3
%                 lineHandle.Color = newColor;
%             end
        end